Congruent with the concept of a sedan, the 510 could be driven on the freeway safely and comfortably. The car evolved from the 310 to the 410. The 510 became the ideal sedan. The 510 was a perfect balance of engineering, styling, and cost and was frequently compared with luxury cars. The color, safari brown, gained popularity because the owner of a safari brown-colored 510 won the Safari Rally. This car color became very popular in Japan.